Question

if the valency of oxygen is 2 derive the valencies of the other elements present in the following oxides

Answer 1

in sodium oxide - valency of sodium is + 1
in zinc oxide - valency of zinc is +2
in lead oxide - valency of lead is+2
in aluminum oxide - valency of aluminum is+3
in calcium oxide - valency of calcium is +2


hope this will help you

Answer 2

Answer:

hope it will help you !................